Fixes: out of array access Fixes: 21469/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5199357982015488
Alternatively the arrays can be made bigger or the index can be clipped. In case a real file with such huge tiles exist we ask the user to upload it. Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/g2meet.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/g2meet.c b/libavcodec/g2meet.c index 731d29a5d4..7ef275c9fe 100644 --- a/libavcodec/g2meet.c +++ b/libavcodec/g2meet.c @@ -917,6 +917,11 @@ static int epic_jb_decode_tile(G2MContext *c, int tile_x, int tile_y, awidth = FFALIGN(tile_width, 16); aheight = FFALIGN(tile_height, 16); + if (tile_width > (1 << FF_ARRAY_ELEMS(c->ec.prev_row_rung))) { + avpriv_request_sample(avctx, "large tile width"); + return AVERROR_INVALIDDATA; + } + if (els_dsize) { int ret, i, j, k; uint8_t tr_r, tr_g, tr_b, *buf; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".